Finding the Fourth Proportional to 2,131.96, 3,192.78 and 1,764.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.96 : 3,192.78 = 1,764.04 : x
2. Step 2: Convert to fraction form
   2,131.96/3,192.78 = 1,764.04/x
3. Step 3: Cross multiply
   2,131.96x = 3,192.78 × 1,764.04
4. Step 4: Simplify right side
   2,131.96x = 5,632,191.63
5. Step 5: Solve for x
   x = 5,632,191.63/2,131.96
6. Step 6: Final answer
   x = 2,641.79